Cita APA

Clay, D., & Shanahan, J. F. (2011). GIS applications in agriculture. New York: CRC Press.

Citación estilo Chicago

Clay, David,, y John Francis Shanahan. GIS Applications in Agriculture. New York: CRC Press, 2011.

Cita MLA

Clay, David,, y John Francis Shanahan. GIS Applications in Agriculture. New York: CRC Press, 2011.